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Your monitor has a little unusual setting where you can disable Display Port 1.2 support, basically for GPU's that only handle legacy Display Port versions? Not 100% sure, but it's simple enough to try, looks like if you drill down in the monitor menu that setting is under "General" you can enable and disable it see if anything changes. Also the LG website has software up that is less than a month old. I'll assume it's an upgrade / patch for the monitors software since the date is so fresh, but the support site isn't clear. http://www.lg.com/us/support-product/lg-32UD59-B#manuals

I don't think you can do anything further to address the GPU beyond just make sure it's running current drivers. Any driver released in the last year will on an R9 380 should support HDCP by default if the other variables satisfy the requirements.

My experience with Cyberlink PowerDVD over the years is mixed. If you check the monitor and that isn't working, might be work trying an alternative, many come with trial periods just to get a feel if it's a software related issue.

I've got a couple of things I'm not happy with in my current Windows build, so I'm going to wipe clean and start fresh, using official drivers first to make sure we're on a level playing field with everything.

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AlexDeGruvenNot as tall as Bobby Tallbeer. Twilight Sparkle is overrated.MeechiganIcrontian

The CPU is immaterial to HDCP. The GPU matters, though, and Intel has an HDCP 2.2 GPU onboard. Not sure where this "Ryzen can't do HDCP 2.2" urban legend came from or why it keeps popping up, except to say that Ryzen has no onboard GPU at all. For the record: Radeon and GeForce also have 2.2 compliance.

//Edit: for streaming 4K content, you also need PlayReady DRM support. Intel has that now. GeForce has one special driver from Windows update, and Radeon will have a public driver in February.

//Edit: When it comes to BDROM, everyone should just get a standalone player. Blu-ray is trash on PC. A nightmare to get working. DRM disaster.